From dry eye to age-related eye diseases, research shows that nutrition plays a critical role in maintaining the health of our eyes. Caring for eyes includes looking carefully at what you eat. Diet Rich in Nutrients Promotes a Lifetime of Healthy Vision Thirty million (or one out of four) Americans age 40 and older suffer from some level of vision loss. Yet only 30 percent of Americans indicate they incorporate specific foods or supplements into their diet to help improve eye health and vision, according to the American Optometric Association's American Eye-Q survey, which assesses public knowledge and understanding of